Name: ac circuit node method in an angioplasty model
Uploaded: 2024-04-11T12:48:49.000Z
Duration: 1 min 14 s
Channel: JoVE

Dans le système d’angioplastie rotablateur, la turbine provoque la rotation de la fraise du cathéter, ce qui aide à éliminer les dépôts de plaque des artères coronaires.
Le circuit de fonctionnement et de contrôle de ce système peut être modélisé comme un circuit RLC à double nœud avec une source de courant contrôlée par le courant.
Lorsque les valeurs de tension de la source d'entrée, d'inductance et de capacité sont connues, la tension d'entraînement de l'arbre peut être calculée à l'aide d'une analyse nodale.
En utilisant les valeurs de fréquence angulaire, d’inductance et de capacité, l’impédance aux bornes de l’inductance et du condensateur est calculée et un circuit de domaine fréquentiel correspondant est dessiné.
En appliquant la loi du courant de Kirchhoff et la loi d'Ohm au premier nœud, et en substituant l'expression du courant source, on obtient une équation simplifiée.
De même, l'application de la loi du courant de Kirchhoff et de la loi d'Ohm au deuxième nœud donne une autre équation. En substituant la première équation nodale et en simplifiant davantage l’équation, on obtient une tension au nœud égale à la tension de la source.
Enfin, la tension de l’arbre est transformée dans le domaine temporel.

analyse des nœuds pour les circuits ca

Considérons un système d'angioplastie comportant un cathéter équipé d'une turbine, un outil essentiel pour éliminer les dépôts de plaque des artères coronaires. Ce dispositif médical complexe fonctionne à l'aide d'un modèle de circuit rappelant un circuit RLC à deux nœuds alimenté par une source de tension contrôlée en courant. Pour démêler les complexités de ce système, l'analyse nodale est utilisée, une technique puissante fondée sur la loi actuelle de Kirchhoff (KCL), qui reste valable pour les phaseurs. Les circuits CA peuvent être analysés efficacement à l’aide de l’analyse nodale. Le processus commence par la collecte d'informations sur les valeurs de tension, d'inductance et de capacité d’une source d'entrée. Ces points de données peuvent calculer la tension de commande de la tige du cathéter. En tirant parti des valeurs de fréquence angulaire, d'inductance et de capacité, l'impédance aux bornes de l'inductance et du condensateur est déterminée, cartographiant ainsi un circuit dans le domaine fréquentiel. <img alt="Equation1" src="/files/ftp_upload/15110/15110_PT_Equation_1.svg" style="text-align: center; height: 16px;"> <img alt="Equation2" src="/files/ftp_upload/15110/15110_PT_Equation_2.svg" style="text-align: center; height: 40px;"> KCL et la loi d'Ohm sont appliquées aux deux nœuds, produisant des équations décrivant le comportement du système. Lorsqu'elles sont simplifiées et intégrées, ces équations révèlent que la tension de l'arbre est précisément égale à la tension de la source. Cette analyse complète fournit des informations essentielles sur le fonctionnement électrique du système d’angioplastie. Les données de tension peuvent ensuite être converties dans le domaine temporel, permettant ainsi d'évaluer et d'optimiser les performances du système pour une élimination efficace de la plaque dentaire lors des procédures médicales.

Analyse des nœuds pour les circuits CA

Dans le système d’angioplastie rotablateur, la turbine provoque la rotation de la fraise du cathéter, ce qui aide à éliminer les dépôts de plaque coronaire 
...

Education

Enseignement

JoVE Core

Electrical Engineering

Génie électrique

Unit 1

Unité 1

AC Circuit Analysis

Analyse des circuits CA

KEY TERMS AND CONCEPTS

TERMES ET CONCEPTS CLÉS

Node Analysis for AC Circuits

ac circuit node method in an angioplasty model

AC circuit node analysis is used to study an angioplasty system with a catheter turbine. The system helps remove plaque deposits from coronary arteries. Its electrical model is similar to a dual-node RLC circuit driven by a current-controlled voltage source.

The analysis begins by collecting the input source voltage, inductance, and capacitance values. These measurements are used to find the driving voltage for the catheter shaft. The circuit is then viewed in the frequency domain, where angular frequency helps determine the impedance of the inductor and capacitor.

Kirchhoff's current law, or KCL, is applied at both nodes. Ohm's law is also used to write the node equations. Because KCL remains valid for phasors, the AC circuit can be analyzed with nodal analysis in a clear and organized way.

After the equations are simplified and combined, the result shows that the shaft voltage equals the source voltage. The voltage can then be converted back into the time domain. This helps assess and optimize the system's performance for effective plaque removal in medical procedures.

AC Circuit Node Method in an Angioplasty Model

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AC circuit node analysis is used to study an angioplasty system with a catheter turbine. The system helps remove plaque deposits from coronary arteries. Its electrical model is similar to a dual-node RLC circuit driven by a current-controlled voltage source. The analysis begins by collecting the input source voltage, inductance, and capacitance values. These measurements are used to find the driving voltage for the catheter shaft. The circuit is then viewed in the frequency domain, where...

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Learn how nodal analysis and KCL are used to model an angioplasty catheter turbine as a dual-node RLC AC circuit and determine shaft voltage.

AC Circuit Node Method in an Angioplasty Model | JoVE K12

JoVE Core Electrical Engineering offers easy-to-understand animated videos that cover fundamental concepts of electric circuits along with circuit analysis techniques. It incorporates first-order and second-order circuits using operational amplifiers and circuit transformation concepts. The inclusion of practical design examples and real-world applications through scientist-in-action videos adds significant educational value, making complex concepts accessible.

electrical engineering

AC Circuit Node Method in an Angioplasty Model

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